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Re: Cluster Size
- To: Roy Ladner <rladner@nrlssc.navy.mil>, ozone-users@ozone-db.org
- Subject: Re: Cluster Size
- From: Falko Braeutigam <falko@smb-tec.com>
- Date: Tue, 1 May 2001 14:07:52 +0200
- Delivered-To: softw7-ozone-db:org-ozone-users@ozone-db.org
- In-Reply-To: <3AE9627E.659461F@nrlssc.navy.mil>
- Organization: SMB
- References: <3AE9627E.659461F@nrlssc.navy.mil>
On Fri, 27 Apr 2001, Roy Ladner wrote:
> Can anyone give any advice on configuring the config.properties cluster
> size, cluster space size and cluster size ratio?
>
> When I've tried to import a large data set into Ozone I've run into the
> problem of losing data (null values showing up after a commit). When
> I've increased the cluster space size and cluster size, this problem
> stopped, but then there are times when the server simply shuts down - no
> error messages are given. Should these numbers be set in relation to
> the size of the data set being imported into Ozone?
ozoneDB.wizardStore.clusterSize = 65536 -- the max size of each cluster
ozoneDB.wizardStore.clusterSizeRatio = 256 -- the expected size of each
object; helps the kernel to determine the size of newly created objects
The size of the data is not that important - more the size of the objects and
the granularity of your problem in general. Clusters loaded or locked when one
object of the cluster is loaded or locked.
Falko
--
______________________________________________________________________
Falko Braeutigam mailto:falko@smb-tec.com
SMB GmbH http://www.smb-tec.com